Closure lock with adjustable latch bolt and knob removing means



Feb. 20, 1951 E. J. BAUME 2,542,175

wmx ADJUSTABLE L CLOSURE LOCK I H BOLT AND KNOB REMOVING MEAN Filed Oct. 13, 1947 IN V EN TOR.

[dwell J. Baume. BY

l! T TOR/VEX Patented Feb. 20, 1951 CLOSURE LOCK WITH ADJUSTABLE LATCH BOLT AND KNOB REMOVING MEANS Edwall J. Baum, Long Beach, Calif; Betty L.

Baum, executrix of said Edwall J. Baum, deceased, assignor, by decree of court, to Harold F. Clary Application October is, 1947, Serial No. 779,460

3 Claims.

This invention relates to a closure lock or latch, includin a novel means of releasing the knobs so that they may be removed from the lock assembly.

Another object of my invention is to provide a novel closure lock or latch in which the latch bolt is adjustable relative to the lock, and is provided with a groove to fit into the strike plate, whereby the door is more effectively held in closed position.

Another object of my invention is to provide a novel closure lock or latch in which the latch bolt is held in adjusted position by means of a spring detent.

A feature of my invention is to provide a lock or latch of the character stated in which only two axially perpendicular holes need be bored in the door to prepare the door for installation of the lock or latch.

Other objects, advantages, and features of invention may appear from the accompanying drawing, the subjoined detailed, description and the appended claims.

In the drawing- Figure 1 is a transverse sectional view of my novel lock or latch assembly.

Figure 2 is a sectional view taken on line 2-2 of Figure 1.

Figure 3 is a fragmentary perspective view of the knob tube.

Figure 4 is a perspective view of one of the sleeves.

Figure 5 is an end view of one of the knobs.

Referring more particularly to the drawing, the door I9, is provided with two axially perpendicular bores H and I2. The knob assembly l3, extends axially through the bore [2, and the latch bolt assembly Hi, extends axially through the bore II. The knob assembly consists of an inner housing [5, which includes a ring I6, and a pair of sleeves I1, H, which are attached to the ring Hi. The method of attachment is as follows: a bell shaped washer I1 is afiixed to the inner end of each of the sleeves I! in a suitable manner. A screw I 8 then extends into this washer ll substantially as shown in Figure 1. The knobs I9 and 20, are each provided with a tube 2|, the tubes being fixedly secured to the knobs, or they may be integrally formed with the knobs if desired.

The tubes 2!, fit in the respective sleeve 11, and are guided and journaled in this sleeve. Each sleeve 2!, is provided with one or more fingers 22, which are used to cam the latch bolt into retracted position, as will be further described. The tubes 2|, are also provided with a small lug or button 23, which is struck upwardly from the tube. This button or lug extends through a notch 24, in the washer I1, and the tube is then rotated so that the lug '23, is out of alignment with the notch. The tube and the knob are thus held against removal since the lug 23, now engages the ring shoulder 25, when the knobs are in a position to actuate the latch bolt, the lug 23, is out of alignment with the notch 24, and the means to permit suficient rotation of the knob to enable the lug 23, to be aligned with the notch 24, will be subsequently described.

The latch bolt assembly It, includes a thimble nut 26, which is slidably mounted in the ring It, and is normally pressed outwardly by the coil spring 21, which engages the thimble nut substantially as shown. The latch bolt head 28, is formed with a threaded bolt 29, which projects inwardly and screws into the thimble nut 26. It will be evident that rotation of the head 28, will adjust this head so that it will properly engage the strike plate, to be subsequently described.

Also, when the bolt 29, is threaded outwardly, and then if the head 28, is pushed inwardly, by the workman, the thimble nut 26, will be moved inwardly a suflicient amount so that the fingers 22, do not engage this thimble nut until the lug 23, is aligned with the notch 24, and when so aligned the knob, I9, 20, can be pulled outwardly and removed.

The thimble nut 26, is formed with a fiat plate 30, and this cam plate is engaged by the fingers 22, thus rotation of the knob I9, 29, will cam the thimble nut 26, and the head 28, inwardly so that the latch bolt is released. The bolt head 28, is slidably mounted in a cup 31, which is mounted in the bore II. This cup is formed with a groove 32, which is entered by the spring detent 33, thus yieldably holding the latch bolt against rotation. The head 28, is formed with a transverse groove 34, which fits over a rib 35, in the strike plate 33, thus when the latch bolt is pressed outwardly and engages the strike plate, the groove 32, fits over the rib 35, thus effectively holdingthe door in closed position,

and also preventing rattling of the door due to the fact that the rib 35, may be tapered.

The knob 23, carries a lock 31, and the tumbler of this look isprovided with a lug 38, this lug serving to hold the lock against removal when it is turned out of alignment with the notch 39. Friction rings on the lock 31, will hold the lock against accidental rotation.

In operation, the housing 15, is first assembled in the bore [2, then the latch bolt is threaded into the thimble 26, and the thimble is then pushed inwardly a maximum amount so that the knobs l9, and 20, can be assembled by moving the lug 23, through the notch 24, and then rotating the knob so that the lug 23, is held by the shoulder 25. The latch bolt is now released, and the spring 21 urges the thimble into engagement with the fingers 22.

The latch bolt head 28, is now screwed inwardly until it is properly adjusted to match the strike plate 36. The spring detent 33, yieldably holds the head 28, in its adjusted position, and the lock or latch is now ready for use.

Having described my invention, I claim:

1. A closure latch comprising an inner housing, a latch bolt comprising a head, and a threaded stem extending from the head into said housing, a thimble threaded onto said stem, a knob, means on the knob engageable with the thimble to retract the latch bolt, a cup in which 7 thimble threaded onto the inner end of the stem,

said thimble being engaged by said tube to retract the latch bolt, said thimble being retractable by pressure on the head to permit release of the tube, a cup in which said head fits, and a spring detent in the head engaging the cup to prevent accidental rotation of said head.

3. A closure latch comprising an inner housing, said housing including a sleeve, a knob, a tube on said knob extending into said sleeve, a lug on the tube, a shoulder in the sleeve engaged by the lug to hold the tube within the sleeve, said sleeve having a notch extending into the shoulder through which said lug may pass to remove the tube, a latch bolt extending from the housing, said latch bolt including a head, a threaded stem extending from the head into the housing, a thimble threaded onto the stem, said tube engaging the thimble to retract the latch bolt on rotation of the tube, said thimble being retractable to disengage the tube by pressure on said head, whereby the tube may be rotated to permit said lug to pass through said notch to remove the knob, a cup in which said head is fitted, and a spring detent in the head engaging the cup to hold said head against accidental rotation.

EDWALL J. BAUME.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,657,575 Imber Jan. 31 1928 1,720,640 Wread July 9, 1929 1,751,101 Schlage Mar. 18, 1930 1,796,727 Schlage Mar. 17, 1931 1,904,763 Baume Apr. 18, 1933 

